Omicron v. delta: Battle of coronavirus mutants is critical

As the omicron coronavirus variant spreads in southern Africa and pops up in countries all around the world, scientists are anxiously watching a battle play out that could determine the future of the pandemic. Can the latest competitor to the world-dominating delta overthrow it?

source https://medicalxpress.com/news/2021-12-omicron-delta-coronavirus-mutants-critical.html